You can purchase Authagraph's products at following shop

MIRAIKAN SHOP(National Museum of Emerging Science and innovation, Odaiba)
Good Design Store(Tokyo Central Station KITTE 3rd floor)
Tsutaya Umeda Luxury Life
Curiosutatte(Seibu DepartmentB 5th floor)
NADIFF CONTEMPORARY(Museum of Contemporary Art Tokyo, Kiyosumi Shirakawa)
Study Room Shimokitazawa
Study Room Rise-Futago-Tamagawa
ICC Museum Shop(Tokyo Opera City・Hatsudai)
NADIFF CONTEMPORARY(Museum of Modern Art Tokyo・Kiyosumi Shirakawa)
P LOT(Iruma City)
NADiff X 10(Tokyo Metropolitan Museum of Photography, Ebisu)
NADiff modern(Bunkamura, Shibuya)
gallery 5(Tokyo Opera City・Hatsudai)

If you want to order from countries other than Japan, visit the web shops bellow,
PLOT, Bric Block, Rakuten
(You can use credit cards and/or Paypal)

[Product]Tensegrity Christmas Tree

This christmas tree is made of tensegrity structure. Tensegrity was known as the lightest structure since 60s invented by Buckminster Fuller. It is supported by discontinuous struts connected by only tension wire. 36 struts look as if they are floating in air. The Tensegrity structure is also known as a difficult structure system to construct especially in tension's adjustment. We carefully designed an assembling method so that anyone can assemble it and take it apart without tool.

6 layers:H120cm X D80cm
(20cm X 80cm when dismantled)
price: 90,000 yen (900 euro)+ tax
colors: green, unpainted, silver

This Tensegrity Tree is made as an art piece by hand. And we don't attach a guaranty, construction manual and package. When shipping, we carefully pack it and ship it as an art piece though.
The structure and connection is strongly-build. But The tension member may be loosen if you handle it roughly after a few years.
Tensegrity Christmas Tree01